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author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2020-06-06 10:45:37 -0700 |
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committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2020-06-06 10:45:37 -0700 |
commit | 8dd06ef34b6e2f41b29fbf5fc1663780f2524285 (patch) | |
tree | d59152f37ea7b36c3cf1778e20b85239f89c4e77 /fs/afs/cell.c | |
parent | Input: synaptics - add a second working PNP_ID for Lenovo T470s (diff) | |
parent | Input: iqs269a - add missing I2C dependency (diff) | |
download | linux-dev-8dd06ef34b6e2f41b29fbf5fc1663780f2524285.tar.xz linux-dev-8dd06ef34b6e2f41b29fbf5fc1663780f2524285.zip |
Merge branch 'next' into for-linus
Prepare input updates for 5.8 merge window.
Diffstat (limited to 'fs/afs/cell.c')
-rw-r--r-- | fs/afs/cell.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/fs/afs/cell.c b/fs/afs/cell.c index fd5133e26a38..78ba5f932287 100644 --- a/fs/afs/cell.c +++ b/fs/afs/cell.c @@ -134,8 +134,17 @@ static struct afs_cell *afs_alloc_cell(struct afs_net *net, _leave(" = -ENAMETOOLONG"); return ERR_PTR(-ENAMETOOLONG); } - if (namelen == 5 && memcmp(name, "@cell", 5) == 0) + + /* Prohibit cell names that contain unprintable chars, '/' and '@' or + * that begin with a dot. This also precludes "@cell". + */ + if (name[0] == '.') return ERR_PTR(-EINVAL); + for (i = 0; i < namelen; i++) { + char ch = name[i]; + if (!isprint(ch) || ch == '/' || ch == '@') + return ERR_PTR(-EINVAL); + } _enter("%*.*s,%s", namelen, namelen, name, addresses); |